4 hasil untuk "Kouketsu, Shinya"
Menampilkan 1–4 · 0,44 detik · RSS
-
Artikel Jurnal Teks lengkap
Estimation of Basin-scale turbulence distribution in the North Pacific Ocean using CTD-attached thermistor measurements
A recently developed technique for microstructure measurement based on a fast-response thermistor mounted on a conductivity-temperature-depth equipment was used on eight cruises to obtain 438 profiles. Thus, the spatial distribution of turbulent dissipation rates across the North Pacific sea floor…
-
Artikel Jurnal Teks lengkap
Estimating the population mean for a vertical profile of energy dissipation rate
Energy dissipation rates are an important characteristic of turbulence; however, their magnitude in observational profiles can be incorrectly determined owing to their irregular appearance during vertical evolution. By analysing the data obtained from oceanic turbulence measurements, we demonstrate…
-
Preprint Teks lengkap
Koopman Analysis of Sea Surface Temperature with a Signature Kernel
We develop a trajectory-based Koopman method for sea surface temperature (SST) that lifts annual SST segments using a signature kernel -- a reproducing kernel Hilbert space (RKHS) kernel that compares paths via iterated-integral features -- and learns the one-year shift operator. By operating on…
-
Artikel Jurnal Teks lengkap
Southward spreading of the Fukushima-derived radiocesium across the Kuroshio Extension in the North Pacific
The accident of the Fukushima Dai-ichi nuclear power plant in March 2011 released a large amount of radiocesium into the North Pacific Ocean. Vertical distributions of Fukushima-derived radiocesium were measured at stations along the 149°E meridian in the western North Pacific during the winter of…